Answer:
1 1/9 inches
Step-by-step explanation:
The scale of the drawing is the ratio of the drawing size to the actual size. It applies to all drawing dimensions. This lets us write a proportion for the width of the drawing.
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setup
drawing size / actual size = (1 in)/(1 1/2 in) = (width)/(1 2/3 in)
solution
Multiplying by 1 2/3 in, we find the width to be ...
width = (1 2/3 in) × (1 in)/(1 1/2 in)
width = (5/3 in)×1/(3/2) = (5/3 in)(2/3) = 10/9 in = 1 1/9 in
The width of the drawing is 1 1/9 inches.
